HEIDENHAIN TNC 640 (34059x-01) ISO programming - Manual (Page 380)

380 Manual Operation and Setup
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Activating a datum from the preset table in the Manual Operation
mode
Select the Manual Operation mode
Display the preset table
Select the datum number you want to activate, or
With the GOTO key, select the datum number that
you want to activate. Confirm with the ENT key
Activate the preset
Confirm activation of the datum. The TNC sets the
display and—if defined—the basic rotation
Exit the preset table
Activating a datum from the preset table in an NC program
To activate datums from the preset table during program run, use
Cycle 247. In Cycle 247 you define the number of the datum that you
want to activate (see User's Manual, Cycles, Cycle 247 SET DATUM).
When activating a datum from the preset table, the TNC
resets the active datum shift, mirroring, rotation and
scaling factor.
However, a coordinate transformation that was
programmed in Cycle 19 Tilted Working Plane, or through
the PLANE function, remains active.